Learn by Doing – Sampling Distribution (x-bar)
The Federal Pell Grant Program provides need-based grants to low-income undergraduate and certain postbaccalaureate students to promote access to postsecondary education. According to the National Postsecondary Student Aid Study conducted by the U.S. Department of Education in 2008, the average Pell grant award for 2007-2008 was $2,600. Assume that the standard deviation in Pell grant awards was $500.
http://phhp-faculty-cantrell.sites.medinfo.ufl.edu/files/2012/12/LBD_09010_151.swf
This document is linked from Sampling Distributions.